I have Win 10 and Win 7 on separate harddrives and all partitions of each
are hidden from the other. Win 10 is on Harddrive 0 and Win 7 is on
Harddrive 1, with the swap enabled. Whenever I have been in Windows 10 and
later boot to Win 7 using Bing, the C partition needs to be checked for
errors. Most times it finds none but sometimes it does and at least one
time it would not allow even a diskcheck, saying it couldn't get control of
the drive due to a recent program installation. (I had installed no
programs) The only way I finally got it checked and fixed was to unhide it
for Win 10 and then have Win 10 check it. It said it had no errors but then
found errors on it's own C partition. When I rebooted into Win 7, the disk
check problem was gone but then the Win10 drive reported errors, which were
eventually fixed and it booted. Of course, the next time I went back to Win
7, it again had to check the drive, but at least this time the check worked.

What could be causing this considering that the drives are hidden from one
another?

I have not disabled fast startup in Win10 and I'm not sure if I'm using
limited primaries. I will check, but I think I am using the default,
whatever that is. Would either of these cause a problem with disk errors
when dual booting?

"Brian K" wrote in message news:9609@public.bootitng...

JoRene,

Two quick questions. Are you using limited primaries? Have you disabled Fast
Startup in Win10?

See the post titled "Win 8 Corruption" at the top of the BootIt Bare Metal forum. Although it's about Win 8, it might pertain to Win 10 also. However, I have the same question as you regarding how this would happen if the two Windows installations are truly hidden from each other.

I had the problem in the past and both windows installations were hidden
from each other. The problem in my case is because I had them seeing the
Data drives I had. That was because Fast Start wasn't turned off.

After turning off Fast Start on both, no more problems.

I also now have Windows 8.1 and Windows 10 and they both see my 2 Data
drives which I want them to. With Fast Start turned off on both Windows, I
have no corruption problems.

Ed.

"MJNelson" wrote in message news:9612@public.bootitng...

Are they truly hidden from each other?
Unless you use unlimited primaries, not sure you can.
Mary

On 5/1/2015 1:56 PM, "Bob Coleman" wrote:
> See the post titled "Win 8 Corruption" at the top of the BootIt